Drafting instrument



May 17, 1932. A. M. SALTNASS DRAFTING INSTRUMENT Filed Feb. 13. 1931 2 Sheets-Sheet 1 Inventor g uw' A llorney May 17, 1932. A. M. SALTNASS DRAFTING INSTRUMENT Filed Feb. 13, 1931 2 Sheets-Sheet" 2 In venior JI'Z6LZJT6QZZZ'IZQ6S A tlorney Patented May 17, 1932 9 4 UNITED STATES PATENT OFFICE Application filed February 13, 1931. Serial No. 515,623.

This invention relates to an improved configuration and has one end reduced in didrafting tool or instrument which is proameter as indicated at 16 to accommodate avided with a receptacle. metal projecting ferrule 17. The ferrule is In carrying the inventive conception into of cylindrical cross sectional shape and 5 practice, I have found it expedientand pracformed intermediate its ends with a shoulder 55 tical to provide a duplex structure which is or stop bead 18.

characterized by a novel pen holder and grip, Moreover, the handle 15 is somewhat tathe parts being so placed together as to form pered to facilitate insertion into the adjaa receptacle. cent end portion of the pen holder. The plug More specifically speaking, the improved 13 fitting into this pen holder converts the 66 structure embodies a tubular pen holder same into a seat as well as a receptacle to acwhich has the additional function of a re commodate the telescopically fitting handle. ceptacle and the handle being frictionally As before indicated, there are two forms of and telescopically fitted in a removable way erasers, namely, the rubber type and the 15 into the adjacent end of the holder. metal scraping blade type. The metal blade The entire assembly is shown plainly in is indicated in the drawings by the numeral Figure 2 and the other views are employed 20 and as seen in Figure 9 includes an anchorto illustrate the details. ing tang or shank 21 which is fitted into the In the drawings: ferrule covered portion of the handle 15. In r 20 Figure 1 is a side elevational View of the Figure 4, the ferrule is provided with a improved instrument. threaded or screw-end coupling 22 to ac- Figure 2 is a view in section and elevation commodate a rubber ink eraser 23. showing the general assembly. Thus, the device as seen in Figures 3 and 05 Figure 3 is an elevational view of the type 4 may be employed in an optional or interof handle provided with a metal eradicator changeable manner. or eraser. In both forms of the invention I provide Figure 4 is a view like Figure 3 showing the metal lined, rubber covered pen holder the detachable and adjustable rubber ink which has the additional function of formn eraser. ing a socket or receptacle as well as a proto Figure 5 is a perspective View of the pen tecting sheath to protect the eraser equipped so holder per se. end portion of the handle. Metal to metal Figure 6 is a cross section on the line 6 -6 contact between the ferrule on the handle of Figure 2. and the lining in the holder provides a fric- Figure 7 is a cross section on the line 7-7 tional coupling connection between the two of Figure 3. parts of the tool so as to maintain them in Figure 8 is a perspective view showing the proper associated relationship for convenferrule and reduced end portion of the ban ient usage.

dle. The novelty is predicated upon the sim- Figure 9 is a perspective view of the metal plicity and economy of arrangement of parts scraping or erasing blade. as well as the extended degree of usage.

As shown in Figure 5, the pen holder which Consequently, the device is of a more diof longitudinal elongated form and of conversified character and yet has the external ventional configuration, is denoted by the appearances of an ordinary ink pen, such as 7 numeral 10. It comprises a rubber casing 11 is used most satisfactorily by draftsmen. J and a metal lining tube 12. In one end is a It is thought that the description taken plug 13 as seen in Figure 2 to accommodate in connection with the drawings will enand hold in place the conventional pen 14. able a; clear understanding of the invention The opposite ends of the lining sleeve 12 to be had. Therefore,amore lengthy descripare formed with flanges to retain the rubber tion is thought unnecessary. grip 11. The handle 15 is of conventional While the preferred embodiment of the 1% invention has been shown and described, it is to be understood that minor changes coming within the field of invention claimed may be resorted to if desired.

I claim:

A new article of manufacture, comprising a handle, a metal ferrule fitted on one end of the handle and having a bead thereon forming a shoulder, a sleeve having an outwardly extending flange at each end thereof with one end of the sleeve fitting over the ferrule with a flange on the sleeve abutting the shoulder bead to limit the entrance of the ferrule in the sleeve, a plug closing the other end of the sleeve and forming with the ferrule a receptacle in the sleeve and a resilient sleeve carried by the first mentioned sleeve and retained thereon by the two flanges.

In testimony whereof I aflix my signature.

ABLE M. SALTNASS. 

